Physiological adaptations to resistance exercise training: adaptations that occur after resistance training are complex. Sets off a cascade of cellular signals that affect different cells (muscle, satellite) that increases transcription of mrna and translation of mrna pro. Neural adaptations with strength training: over a short period of time, sig. increase rapidly in strength, no change in hypertrophy during this time. So, increases in strength comes from neural drive. Neural adaptations: increased neural drive: motor unit activation, activate lower or higher threshold mu"s depending on muscle/exercise, motor unit firing rate and pattern, motor unit synchronization. If you can synchronize mu"s, can generate more force. If you activate mu1, you get a certain amount of force. If you can synchronize both 1+2, they can activate together and generate more force together: agonist-antagonist interaction, greater agonist and synergistic activation, less antagonistic activation, can reduce negative input of golgi tendons.